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1 /*
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2 DOS interrupt-based keyboard driver.
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3 Copyright (C) 2013 John Tsiombikas <nuclear@member.fsf.org>
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with the program. If not, see <http://www.gnu.org/licenses/>
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17 */
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18 #ifndef KEYB_H_
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19 #define KEYB_H_
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20
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21 #define KB_ANY (-1)
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22 #define KB_ALT (-2)
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23 #define KB_CTRL (-3)
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24 #define KB_SHIFT (-4)
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25
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26 /* special keys */
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27 enum {
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28 KB_LALT, KB_RALT,
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29 KB_LCTRL, KB_RCTRL,
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30 KB_LSHIFT, KB_RSHIFT,
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31 KB_F1, KB_F2, KB_F3, KB_F4, KB_F5, KB_F6,
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32 KB_F7, KB_F8, KB_F9, KB_F10, KB_F11, KB_F12,
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33 KB_CAPSLK, KB_NUMLK, KB_SCRLK, KB_SYSRQ,
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34 KB_ESC = 27,
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35 KB_INSERT, KB_DEL, KB_HOME, KB_END, KB_PGUP, KB_PGDN,
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36 KB_LEFT, KB_RIGHT, KB_UP, KB_DOWN,
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37 KB_NUM_DOT, KB_NUM_ENTER, KB_NUM_PLUS, KB_NUM_MINUS, KB_NUM_MUL, KB_NUM_DIV,
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38 KB_NUM_0, KB_NUM_1, KB_NUM_2, KB_NUM_3, KB_NUM_4,
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39 KB_NUM_5, KB_NUM_6, KB_NUM_7, KB_NUM_8, KB_NUM_9,
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40 KB_BACKSP = 127
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41 };
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42
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43
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44 #ifdef __cplusplus
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45 extern "C" {
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46 #endif
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47
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48 int kb_init(int bufsz); /* bufsz can be 0 for no buffered keys */
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49 void kb_shutdown(void); /* don't forget to call this at the end! */
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50
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51 /* Boolean predicate for testing the current state of a particular key.
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52 * You may also pass KB_ANY to test if any key is held down.
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53 */
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54 int kb_isdown(int key);
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55
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56 /* waits for any keypress */
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57 void kb_wait(void);
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58
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59 /* removes and returns a single key from the input buffer.
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60 * If buffering is disabled (initialized with kb_init(0)), then it always
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61 * returns the last key pressed.
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62 */
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63 int kb_getkey(void);
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64
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65 #ifdef __cplusplus
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66 }
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67 #endif
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68
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69 #endif /* KEYB_H_ */
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